The Prophet (sal Allahu alaihi wa sallam) taught us to pray, “Allahummar-zuqna min fadhlika wa laa tah-rim-na riz-qaka.” [Hilyatul Awliya]
The meaning of this Dua is: “Oh Allah! Grant us Rizq from your bounty and do not let us be deprived of our Rizq.”
When you say “Allahummar-zuqna” then keep the two kinds of Rizq in mind:
General (Aam) Rizq: This is for everyone, whether they be good or evil. This is sustenance for the body.
Special (Khaas) Rizq: The sustenance of the heart and soul. This is Ilm (knowledge leading to awareness of Allah) and Eeman (unpolluted belief in Allah).